Somthing like that should be possible code and details might vary...
import mitk.plugin import mitk.core import SimpleITK as sitk nodes = mitk.plugin.get_current_selection() for node in nodes: gaussian = sitk.SmoothingRecursiveGaussianImageFilter() blur_image = gaussian.Execute(node.data) node.data = blur_image
After execution content of all selected nodes are blured and the render windows are directly updated accordingly.